The King of Hearts is the consort of the Queen of Hearts, and, unlike most instances, is generally the lesser of the two monarchs. He is much smaller than his wife, as well as meeker. While he tries to please his wife, at the same time, he is one of the few people who is able to change her mind about anything, such as altering Alice's beheading to a trial instead. He seems to act more like a son to his wife than a husband, as he asks her to put Alice on trial in a childlike manner, and she pats him on the head like he were a child after taking his suggestion for the trial, as well as using him as a shield against an oversized Alice.
The King of Hearts appears in the later portions of the film, alongside his wife; he notably receives much less of a welcome from his subjects (particularly the White Rabbit) than the Queen. He initially assumes that Alice is a card, but is quickly corrected. When Alice later angers the Queen, he surprisingly convinces the Queen to give Alice a trial rather than an immediate beheading. He functions as the head of the court, later citing regulation when Alice grows to extreme heights after eating mushroom pieces. The King is later seen in the big chase scene near the end of the film.
Prince Henry Mills is the son of King Xavier. He is the husband of Cora Mills and father to Regina Mills.
In the Enchanted Forest, he marries Cora after she demonstrates the ability to spin straw into gold. He is later the loving but weak father of the Evil Queen, Regina, and serves as her royal valet in the Enchanted Forest. Henry is supportive of Regina, but does not protect her against the manipulations or actions of her mother. He is later held captive in Wonderland by Cora as leverage against Regina, who eventually rescues him. However, when Rumplestiltskin informs Regina she must retrieve the heart of who she loves most to enact his dark curse, she kills him. In Storybrooke, Regina appears to have cared a great deal for her father, naming her adopted son Henry and turning his tomb into a large mausoleum. After his death, Henry was sent to the Underworld.
Years later while trying to find Hook, Regina meets him, who apologies for her actions back in the Enchanted Forest. Later, Cora threatens to send him to Hell. When at the entrance to Hell, Regina tries to persuade her mother not to send her father to Hell which she starts to do. What Cora doesn't know is that Henry was spared upon his unfinished business of Regina being free of her mother. Henry then meets his grandson Henry. Before heading to Mount Olympus, Henry tells his grandson to watch over his daughter and to remember who she is.